Spark-arrester.



.F. STAMEY.

SPARK ARRESTER.

APPLICATION FILED APR. 7, I917.

1,288,7fi9 Patented Dec. 24, 1918.

2 SHEETS-SHEET l- ,F. STAMEY.

SPARK ARRESTER.

APPLICATION FILED APR. 7 1911.

1,2832%, Patented Dec. 24, 1918.

2 SHEETS-SHEET 2.

FQRNIO STAMEY, 0F FAYETTE, IDAHO.

SPARK-ARRESTER.

Specification of Letters Patent.

Patented Dec. 24,1918,

Application filed April 7, 1917. Serial No. 160,572.

To all whom it may concern:

Be it known that T, Fomvio STAMEY, a citizen of the United States,residing at Fayette, in the county of Canyon and State of Idaho, haveinvented certain newv and useful Tmrovements in Spark-Arresters; and Ido liereby declare the ,following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in spark arresters for the smokestack of a locomotive, stationary boiler or similar devices, and anobJect of the invention is the provision of a simple, durable and highlyefficient device of this character, the component parts of which areassembled in a novel and convenient manner so that any of the parts canbe easily removed when desired to substitute new parts therefor.

Other objects will appear and be better understood from that embodimentof my invention of which the following is a specification, referencebeing had to the accompanying drawings forming a part thereof, in which:

Figure l-is a vertical side elevation of the spark arrester in operativeposition on a stack, a

Fig. 2 is a vertical elevation ofthe inner body of the spark arresterremoved from position,

vFig. 3 is a top plan view of the deflector and supporting meanstherefor detached from operative position,

Fig. i is a vertical sectional view taken through 'Fig. 1,

Fig. 5 is a detail perspective view, on a reduced scale, of one end ofthe innermost baffle detached from operative position.

Fig. 6 is a detail perspective view on a reduced scale of one end of theoutermost bafie detached from operative position, and

Fig. 7 is a bottom plan view of the spark arrester in operative positionon a stack with the latter in section, taken on the line 77 of Fig. 4.

Referring to the drawings in detail, the letter A designates, forconventional purgoseathe boiler of a locomotive engine and the smokestack thereof. The spark arrester is designated, as an entirety, by thenumeral 1 and comprises an outer cylindrical body 2 and an innercylindrical body 3 arranged in spaced relation to the inner side of theouter body 2. The outer body 2 is formed of a single blank of metal bentinto cylindrical form and has the meeting ends overlapping, as shown at4, and secured to each other by suitable fastening elements. The upperend of the body 2 is bent to provide a circular flange 5, upon whichrests a circular flange 6 formed on the base portion of a substantiallyfrusto-conical shaped dome 7, the said flanges 5 and 6 being secured toeach other by fastening elements 8. The dome 7 is formed of a singleblank of sheet metal, and the upper end of the dome is open and theterminal of the upper end of the wall of the dome is extendedvertically, as shown at 9. The inner body 3 is likewise formed of asingle blank of sheet metal, foldedinto cylindrical form and has theupper end thereof terminating below the upper end of the outer body 2and provided with a plurality of spaced vertical fingers 10, the upperends of which are bent outwardly, as shown at 11. A circular plate 12rests on the flanges formed by the out-- wardly bent portions 11 of thefingers 10 and is secured to the flanges by suitable fastening elements,and the said plate is' provided with a depending circumferential flange13,

I which engages and has connection with the inner side of the outer body'2, in any suitable manne-r.

Located on opposite sides of the inner body 3 is a pair of cylindricalbodies, designated, respectively, by the numerals 13 and 14. Thesebodies 13 and 14 are arranged in spaced relation to the inner body 3 andhave their upper ends provided with circumferential flanges, designated,respectively, 15 and '16, and which have connection with the undersideof the plate 12 in any suitable manner. The cylindrical bodies 13 and 1%are considerably shorter in length than the inner and outer bodies andare adapted to serve as baffles. When the spark rnunicates with theopening in the plate 12,

and an inverted conical shaped deflecting element 17, formed offoraminous material, is positioned within the stack B and has the lowerend thereof secured to a brace rod 18, which extends diametrically ofthe stack B and has the opposite ends thereof bent to provide flangeswhich are connected to the stack at diametrically opposite points in anysuitable manner. The upper end of the defiecting element 17 projectsthrough the opening-in the plate 12 and is secured to a ring-shapedelement 18, from the periphery of which extend a plurality of radialfingers 19, which overlie the plate 12 and engage mountedon the upperside The lower the upper side of beneath clips 20 of the plate 12. endsof the outer and inner bodies 2 and 3 are each cut away on curved lines,on opposite sides, so as to agree with the curvature of the upper sideof the boiler of the'locomotive, and the said outer and inner bodies 2and 3 are provided at oppo, site sides, and adjacent their lower ends,with communicating discharge openings 21. The smoke and cinders andsparks carried thereby upon issuing from the stack-B will contact withthe deflector 17, a large. portion of the smoke passing through thedeflector and out through the opening in the plate 12 and thence throughthe open end of the dome 7.-, A portion of the cinders accompanying thesmoke will be deflected downwardly, by the'deiiector 17, and theremainder of the Cinders and the sparks will accompany the residue ofthe smoke, which-has failed to escape through the deflector l7, andenter the space between the stack and the baflle 14 and thencedownwardly and into the space between the baiile let and the inner body3, the smoke then passing upwardly over the body 3 and thence downwardlybeneath the bafiie 13'. This will efiect a sufiicient expansion of thesmoke so as to efiect release. of the particles of cinders, and

the sparks held in suspenresidue of the mea /2e sion by the smoke, andprevent the escape of the sparks long enough to admit of the samebecoming extinguished, the cinders and other particles thencegravitating to the lower ends of the outer and inner bodies 2 and 3, andescaping through the openings 21 and into a suitable receptacle, notshown, and to be provided therefor.

It is evident that various changes might be resorted to in the form,construction and arrangement of the several parts without departing fromthespirit and scope of the invention as claimed.

Having thus described my invention what I claim as new, is:

A. spark arrester includinga smoke stack, an outer casing surroundingthe smoke stack in spaced relation and projecting beyond the upper endthereof, an inner casing in said outer casing and in spaced relationthereto and to the smoke stack and terminating at its upper end in aplane with the smoke stac a plate secured to the top of said inner plateand outer casing and having a central opening, cylindrical bafliessecured to said plate and depending downwardly between the inner andouter casings and the inner casing and smoke stack, a ring supportedover the opening in said plate, a-

conical shaped perforated deflector carried by' the rings and dependingdownwardly in the smoke stack, and a dome secured to the upper end ofthe vouter casing and having an opening therein.

In. testimony whereof I aflix my signature in presence of two witnesses.

' FORNIO STAMEY. Witnesses:

F. .H. LYON, J. E, SHEPARD

